Measurement-based modelling of LTE performance in Dublin city

LTE/4G is the next generation of cellular networks which specifically aims to improve the network performance for data traffic and is currently being rolled out by many network operators. We present results from an extensive LTE measurement campaign in Dublin, Ireland using a custom performance measurement tool. Performance data was measured for two local operators at a variety of locations within the city (including cell edge locations, indoors, outdoors, etc.) as well as for mobile users on public transport within the city, too. Using this data we derive a model of the characteristics of link layer RTT and bandwidth vs link signal strength. This model is suited to use for performance evaluation of applications and services, and since it is based on real measurements it allows realistic evaluation of performance.